H04J 14/0294
Dedicated protection at the optical channel
Official title: {Dedicated protection at the optical channel (1+1)}
H04J14/0294 (Dedicated protection at the optical channel) appears on 212 US grants and 227 published applications in this corpus.
Search patents in H04J- Granted patents
- 212
- Published applications
- 227
- Assignees
- 114
- Inventors
- 556
- Latest grant
- 22 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 2 |
| 2002 | 7 | 23 |
| 2003 | 14 | 26 |
| 2004 | 7 | 29 |
| 2005 | 16 | 30 |
| 2006 | 15 | 21 |
| 2007 | 15 | 12 |
| 2008 | 17 | 10 |
| 2009 | 19 | 11 |
| 2010 | 18 | 7 |
| 2011 | 9 | 5 |
| 2012 | 6 | 8 |
| 2013 | 5 | 6 |
| 2014 | 10 | 8 |
| 2015 | 8 | 7 |
| 2016 | 6 | 2 |
| 2017 | 6 | 5 |
| 2018 | 3 | 1 |
| 2019 | 3 | 3 |
| 2020 | 2 | 1 |
| 2021 | 1 | 2 |
| 2022 | 2 | 1 |
| 2023 | 2 | 4 |
| 2024 | 2 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Data encoding method, data decoding method, and related device22 Apr 2025US 12,284,031 B2Huawei Technologies Co., Ltd.
- Optical transport network protection architecture, nodes and method8 Apr 2025US 12,273,185 B2Telefonaktiebolaget LM Ericsson (publ)
- Redundant wavelength division multiplexing devices and methods for processing light using same30 Apr 2024US 11,973,580 B2Corning Research & Development Corporation
- Apparatus and method for coherent optical multiplexing 1+1 protection9 Jan 2024US 11,870,552 B2II-Vi Delaware, Inc.
- Intelligent controller and sensor network bus, system and method for controlling and operating an automated machine including a failover mechanism for multi-core architectures27 Jun 2023US 11,689,386 B2Vulcan Technologies International Inc.
- Optical protection switching based on intradyne signal detection23 Apr 2026US 2026/0113139 A1Cisco Technology, Inc.
- Dual-Output Coherent Optical Technology13 Feb 2025US 2025/0055571 A1Google Inc.
- Optical communication system, vehicle, and industrial optical network23 May 2024US 2024/0171270 A1Huawei Technologies Co., Ltd.
- Data encoding method, data decoding method, and related device14 Dec 2023US 2023/0403098 A1Huawei Technologies Co., Ltd.
- Apparatus and Method for Coherent Optical Multiplexing 1+1 Protection13 Jul 2023US 2023/0224060 A1II-Vi Delaware, Inc.
Most cited
By later US patents
- Method and system for detecting optical faults within the optical domain of a fiber communication network248US 6,005,694 AMCI WorldCom, Inc. · 1999
- Inter-ring cross-connect for survivable multi-wavelength optical communication networks178US 6,226,111 B1Telcordia Technologies, Inc. · 2001
- Optical layer survivability and security system using optical label switching and high-speed optical header generation and detection154US 6,271,946 B1Telcordia Technologies, Inc. · 2001
- Transparent optical self-healing-ring communication network98US 5,903,371 APirelli Cavi S.p.A. · 1999
- Multi-tiered control architecture for adaptive optical networks, and methods and apparatus therefor82US 7,013,084 B2Lambda OpticalSystems Corporation · 2006